Morristown, SD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Morristown, a town in Corson County, South Dakota.
Today
75°F
Sunny
Sunny, with a high near 75. West northwest wind 8 to 14 mph, with gusts as high as 24 mph.
7-day forecast for Morristown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 75°F | Sunny | 8 to 14 mph WNW | 0% |
| Tonight | 50°F | Mostly Clear | 2 to 10 mph W | 0% |
| Wednesday | 84°F | Mostly Sunny | 3 to 10 mph W | 0% |
| Wednesday Night | 55°F | Partly Cloudy | 2 to 8 mph SSW | 0% |
| Thursday | 91°F | Sunny | 5 to 10 mph W | 0% |
| Thursday Night | 59°F | Mostly Clear | 3 to 8 mph ENE | 0% |
| Friday | 91°F | Sunny | 7 to 13 mph NNE | 0% |
| Friday Night | 60°F | Mostly Clear | 9 mph E | 0% |
| Saturday | 94°F | Sunny | 9 to 15 mph NE | 1% |
| Saturday Night | 59°F | Mostly Clear | 7 to 13 mph NE | 2% |
| Sunday | 90°F | Mostly Sunny | 7 to 17 mph E | 14% |
| Sunday Night | 61°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 12 to 15 mph E | 31% |
| Monday | 87°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 13 to 20 mph ENE | 17% |
| Monday Night | 60°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 9 to 17 mph ENE | 28% |
Forecast source: National Weather Service (api.weather.gov) for Morristown (45.939, -101.719). Updated through the day.
Growing snapshot for Morristown
Last spring frost
May 20
First fall frost
Sep 23
Growing season
124 days
Hardiness zone
4b
More local growing data for Morristown: nearby ZIP 57645 weather · frost dates · planting calendar · South Dakota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Pretty Rock, Nd (19.7 mi from Morristown). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.